犬のための新しい食物繊維源、アボカドミール(Avocado meal, a novel fiber source for dogs)

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2022-03-28 イリノイ大学アーバナ・シャンペーン校

イリノイ大学の研究者たちは、アボカドミール(アボカド油の加工後に残る果肉、種、皮を粉砕、乾燥、脱脂したもの)をドライドッグフードの繊維源として使用する可能性についてユニークな研究を行っています。

<関連情報>

犬用エクストルードタイプの飼料における新規食物繊維源としてのアボカドミールの栄養学的および物理化学的意味合いについて Nutritional and physico-chemical implications of avocado meal as a novel dietary fiber source in an extruded canine diet

Amanda N Dainton, Fei He, Tanner W Bingham, David Sarlah, Katelyn B Detweiler, Heather J Mangian, Maria Regina Cattai de Godoy

Journal of Animal Science Published::11 February 2022 https://doi.org/10.1093/jas/skac026

 

犬のための新しい食物繊維源、アボカドミール(Avocado meal, a novel fiber source for dogs)

Photo by Maria Cattai de Godoy

Abstract

This study assessed the effects of a diet containing avocado meal (AMD), an underutilized by-product avocado oil processing, on apparent total tract digestibility (ATTD) and fecal fermentative end-products when compared with beet pulp (BPD) and cellulose (CD) diets targeting 15% total dietary fiber (TDF). The concentration of persin, a natural fungicidal toxin present in avocado, was also determined on several parts of the fruit and avocado meal. Nine intact female beagles (4.9 ± 0.6 yr and 11.98 ± 1.76 kg) were randomly grouped in a 3 × 3 replicated Latin square design. Periods were 14 d long, with 10 d of adaptation followed by 4 d of total fecal and urine collection for apparent total tract digestibility (ATTD) calculations. Fresh fecals were analyzed for fermentative end-products. The BPD (87.0 g/d) caused higher (P < 0.05) fecal output (as-is basis) than AMD (62.3 g/d) and CD (58.0 g/d). Fecal score for the BPD (3.1) was greater (P < 0.05) than for AMD (2.8) or CD (2.6). Acid-hydrolyzed fat ATTD was lower (P < 0.05) for the BPD (94.1%) than for the AMD (95.5%) and CD (95.7%). Crude protein ATTD was greater (P < 0.05) for the CD (88.5%) than the AMD (82.2%) or BPD (83.7%). Dogs fed AMD (49.9%) or BPD (51.0%) exhibited greater (P < 0.05) TDF ATTD than CD. The fermentative profile for the AMD (233.4, 70.9, 8.8, and 12.0 μmole/g DM, respectively) was similar (P > 0.05) to the CD (132.9, 61.7, 7.5, and 9.5 μmole/g DM, respectively) profile, with lower (P < 0.05) concentrations of acetate and propionate and higher (P < 0.05) concentrations of isovalerate and indoles compared to the BPD. Dogs fed AMD (47.0 μmole/g DM) or BPD (54.2 μmole/g DM) exhibited similar (P > 0.05) fecal butyrate concentrations greater (P < 0.05) than for CD (24.7 μmole/g DM). Given these results, avocado meal appears to be an adequate dietary fiber source when compared with traditional fiber sources used in canine diets. No health adverse effects were observed in dogs fed extruded diet containing as much as 18% of avocado meal (as-is basis).

有機化学・薬学
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